18686768490

Names of 18686768490

• Cardinal: 18686768490 can be written as Eighteen billion, six hundred eighty-six million, seven hundred sixty-eight thousand, four hundred ninety.

Scientific notation

• Scientific notation: 1.868676849 × 10¹⁰

Factors of 18686768490

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1830

Divisors of 18686768490

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 73 78 90 117 130 137 146 195 219 234 274 365 390 411 438 585 657 685 730 822 949 1095 1170 1233 1314 1370 1597 1781 1898 2055 2190 2466 2847 3194 3285 3562 4110 4745 4791 5343 5694 6165 6570 7985 8541 8905 9490 9582 10001 10686 12330 14235 14373 15970 16029 17082 17810 20002 20761 23955 26715 28470 28746 30003 32058 41522 42705 47910 50005 53430 60006 62283 71865 80145 85410 90009 100010 103805 116581 124566 130013 143730 150015 160290 180018 186849 207610 218789 233162 260026 300030 311415 349743 373698 390039 437578 450045 582905 622830 650065 656367 699486 780078 900090 934245 1049229 1093945 1165810 1170117 1300130 1312734 1515553 1748715 1868490 1950195 1969101 2098458 2187890 2340234 2844257 3031106 3281835 3497430 3900390 3938202 4546659 5246145 5688514 5850585 6563670 7577765 8532771 9093318 9845505 10492290 11701170 13639977 14221285 15155530 15971597 17065542 19691010 22733295 25598313 27279954 28442570 31943194 42663855 45466590 47914791 51196626 68199885 79857985 85327710 95829582 127991565 136399770 143744373 159715970 207630761 239573955 255983130 287488746 415261522 479147910 622892283 718721865 1038153805 1245784566 1437443730 1868676849 2076307610 3114461415 3737353698 6228922830 9343384245 18686768490
• Sum of all divisors σ(n): 53460310176
• Sum of proper divisors (its aliquot sum) s(n): 34773541686
• 18686768490 is an abundant number, because the sum of its proper divisors (34773541686) is greater than itself. Its abundance is 16086773196

Bases of 18686768490

• Binary: 10001011001110100010111010101101010₂
• Hexadecimal: 0x459D1756A
• Base-36: 8L1MAUI

Squares and roots of 18686768490

• 18686768490 squared (18686768490²) is 349195316598856880100
• 18686768490 cubed (18686768490³) is 6525332039075092717072388049000
• The square root of 18686768490 is 136699.5555588971
• The cube root of 18686768490 is 2653.6566815763

Scales and comparisons

• 18,686,768,490 seconds is equal to 594 years, 9 weeks, 3 days, 1 hour, 1 minute, 30 seconds.
• To count from 1 to 18,686,768,490 would take you about one thousand, one hundred eighty-eight years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18686768490 cubic inches would be around 221.1 feet tall.

Recreational maths with 18686768490

• 18686768490 backwards is 09486768681
• The number of decimal digits it has is: 11
• The sum of 18686768490's digits is 63
• More coming soon!